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authorbob picco <bpicco@meloft.net>2014-03-03 11:54:42 -0500
committerDavid S. Miller <davem@davemloft.net>2014-07-21 21:37:05 -0700
commitf6d4fb5cc0475c36437a618db31cbb7f2bf7c282 (patch)
tree6923493e9823f2827d4f2ad1a50a0a1ca3527b0e /arch/sparc/mm
parent9a3c4145af32125c5ee39c0272662b47307a8323 (diff)
downloadlinux-f6d4fb5cc0475c36437a618db31cbb7f2bf7c282.tar.gz
sparc64 - add mem to iomem resource
This patch adds sparc RAM to /proc/iomem. It also identifies the code, data and bss regions of the kernel. Signed-off-by: Bob Picco <bob.picco@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/init_64.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 16b58ff11e65..9f4f532e2627 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -22,6 +22,7 @@
#include <linux/kprobes.h>
#include <linux/cache.h>
#include <linux/sort.h>
+#include <linux/ioport.h>
#include <linux/percpu.h>
#include <linux/memblock.h>
#include <linux/mmzone.h>
@@ -2699,3 +2700,67 @@ void hugetlb_setup(struct pt_regs *regs)
}
}
#endif
+
+static struct resource code_resource = {
+ .name = "Kernel code",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static struct resource data_resource = {
+ .name = "Kernel data",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static struct resource bss_resource = {
+ .name = "Kernel bss",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static inline resource_size_t compute_kern_paddr(void *addr)
+{
+ return (resource_size_t) (addr - KERNBASE + kern_base);
+}
+
+static void __init kernel_lds_init(void)
+{
+ code_resource.start = compute_kern_paddr(_text);
+ code_resource.end = compute_kern_paddr(_etext - 1);
+ data_resource.start = compute_kern_paddr(_etext);
+ data_resource.end = compute_kern_paddr(_edata - 1);
+ bss_resource.start = compute_kern_paddr(__bss_start);
+ bss_resource.end = compute_kern_paddr(_end - 1);
+}
+
+static int __init report_memory(void)
+{
+ int i;
+ struct resource *res;
+
+ kernel_lds_init();
+
+ for (i = 0; i < pavail_ents; i++) {
+ res = kzalloc(sizeof(struct resource), GFP_KERNEL);
+
+ if (!res) {
+ pr_warn("Failed to allocate source.\n");
+ break;
+ }
+
+ res->name = "System RAM";
+ res->start = pavail[i].phys_addr;
+ res->end = pavail[i].phys_addr + pavail[i].reg_size - 1;
+ res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
+
+ if (insert_resource(&iomem_resource, res) < 0) {
+ pr_warn("Resource insertion failed.\n");
+ break;
+ }
+
+ insert_resource(res, &code_resource);
+ insert_resource(res, &data_resource);
+ insert_resource(res, &bss_resource);
+ }
+
+ return 0;
+}
+device_initcall(report_memory);